The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
A comet's tail always points away from the sun.
2
Jupiter is bigger than all the other planets combined.
254
The heart of an astronaut actually gets smaller when in outer space.
216
Only 55% of Americans know that the sun is a star.
986
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88